This product is Discontinued. However Hall Research still offers the UU-2X4-P1 version. The -P1 is very similar to standard version but its remote unit has 5 instead of 8 USB device ports. The -P1 provides a 4-port hub for USB Group 1 (same as standard version), but Group 2 has no hub and there is only one USB connector for it. This is to accommodate USB devices that require direct extension (with no hubs in the path), such as certain Data Recorders. For more information please check out the user manual under downloads tab and see Addendum on Page 8
The UU-2X4, uses one Category 5e or 6 UTP (or STP) cable to extend two independent USB ports (from one or two different PCs). On the remote side, each extended USB port terminates into a 4-port USB hub. This allows up to 4 USB devices to be connected to each extended USB port for a total of 8 ports.
Depending on the UTP cable the unit can extend the USB port to 230 meters (750 ft). Maximum distance using Cat5 (UTP or STP) cable is 150 meters (500 ft), and using Cat6 (UTP or STP) cable is 230 meters (750 ft).
The UU-2X4 provides all the flexibility of an extended range USB in a ready-to-use package. The UU-2X4 is compatible with USB 2.0 specifications and supports both low-speed (1.5 Mbps) and full-speed (12 Mbps) USB data transfer rates.
It delivers all of the benefits of USB, including remote device powering, plug and play operation, and cross-platform flexibility. Made in the USA.